The weather authority is warning people to take cover when strong winds and rain begin.

“Remember, severe thunderstorms can produce tornadoes. Heavy downpours can cause flash floods and water pooling on roads. Lightning kills and injures Canadians every year,” a statement from the weather agency read.

Brockville, South Frontenac and Smiths Falls are also under a severe thunderstorm warning, which means those regions are more likely to see a thunderstorm develop than in regions further south that area also under a thunderstorm watch.